Friday Harbor Airport Weather Forecast

    • 47
    • 63

    Increasing Clouds

    • 48
    • 63

    Mostly Cloudy

    • 49
    • 64

    Mostly Cloudy

    • 50
    • 68

    Partly Sunny

    • 51
    • 71

    Mostly Cloudy

    • 51
    • 70

    Partly Sunny

Today 6 May San Juan County

Partly sunny. Highs in the upper 50s to mid 60s. South wind to 10 Mph. Gusts to 20 Mph in the afternoon.

Tonight 6 May San Juan County

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 40s to lower 50s. Southwest wind 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Friday Harbor Airport Temperature Statistics

May Temperature

Friday Harbor Airport (0 miles)

  • Lowest 1 May, 2026

    45 °F

  • Average May

    59.4 °F

  • Highest 3 May, 2026

    75.9 °F

Climate (2021–Present)

Friday Harbor Airport (0 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.7 °F
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